Great Lakes Coastal Forecasting System, GLCFS

NOTICE: NOS' upgraded FVCOM-based Lake Michigan-Huron Operational Forecast System (LMHOFS) became operational on July 23, 2019. This is NOAA's official forecast guidance for Lakes Michigan and Huron hydrodynamics, including water temps, currents, and lake levels. For more information about LMHOFS, please click here.

NOTICE: NOS' upgraded FVCOM-based Lake Erie Operational Forecast System (LEOFS) became operational on May 3, 2016. This is NOAA's official forecast guidance for Lake Erie hydrodynamics, including water temps, currents, and lake levels. For more information about LEOFS, please click here.